US 12,245,278 B2
Synchronized framing scheduling methods and systems for OFDMA based wireless systems
Mark Altshuller, Ganot Hadar (IL)
Assigned to Commtact LTD, Yavne (IL)
Filed by Commtact LTD, Yavne (IL)
Filed on Sep. 21, 2022, as Appl. No. 17/933,987.
Claims priority of provisional application 63/246,863, filed on Sep. 22, 2021.
Prior Publication US 2023/0089936 A1, Mar. 23, 2023
Int. Cl. H04W 56/00 (2009.01); H04L 5/14 (2006.01); H04W 74/08 (2009.01); H04W 74/0816 (2024.01)
CPC H04W 74/0816 (2013.01) [H04L 5/1469 (2013.01); H04W 74/0891 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for scheduling downlink (DL) and uplink (UL) transmissions in one or more Point-to-Multipoint (PTMP) IEEE 802.11 orthogonal frequency division multiple access (OFDMA) based wireless communication networks, each network comprising one or more IEEE 802.11 OFDMA based Access Points (APs) wherein each AP of said one or more APs comprises associate one or more IEEE 802.11 OFDMA stations (STAs) (e.g. its associated BSTs), the method comprising the steps of:
synchronizing the one or more STAs within each network using one or more synchronization signals transmitted between the one or more APs and the one or more STAs;
allocating one or more Framing Slots, wherein each Framing Slot having a fixed time duration;
dividing each Framing Slot of said one or more Framing Slots into DL burst transmission and UL burst transmission periods wherein the DL burst transmission periods comprise one or more DL Data Units Bursts and wherein each DL Data Unit Burst of said one or more DL Data Units Bursts comprises:
DL PHY header comprising DL scheduling instructions to allocate one or more Resource Units (RUs) to said one or more STAs;
DL MAC and Data as allocated in the allocated RUs per said one or more STAs as indicated in the DL PHY header;
DL Trigger Frame comprising additional instructions for UL communication comprising RU allocation per said one or more STAs;
Acknowledgment (Ack) or Block Acknowledgement (B Ack) for a UL data transmission from said one or more STAs transmitted during previous Framing Slots;
and wherein the UL burst transmission periods comprise one or more UL Data Units Bursts, wherein each UL Data Unit Burst of said one or more UL Data Units Bursts comprises:
UL PHY Header comprising parameters as received in the DL Trigger Frame;
UL MAC Header and Data allocated in RU as received in the DL trigger frame;
Acknowledgment or Block Acknowledgement for the DL Data Units Bursts transmitted in the same or previous Framing Slots;
continuously scheduling by said one or more IEEE 802.11 OFDMA based APs the one or more DL Data Units Bursts during said DL transmission period to said one or more STAs; and
continuously sending said one or more UL Data Unit Bursts by said one or more STAs to said respective one or more APs.